Sep 29, · 10/4/ | Samantha Holt, PhD, Biomedical Engineering. am, ETB, Room , College Station. Tentative Title of Thesis / Dissertation / Record of Study: The Use of Tetrazine-Norbornene Click Products in Dynamic Supramolecular Crosslinking and the Design of 12 rows · Sep 08, · Upcoming Doctoral Dissertation Defense Announcements. Abstracts are available in the PDF linked to Upon completion of the public presentation and defense and the private meeting, the dissertation committee members, in the absence of the candidate and the audience, discuss the candidate's performance and decide whether or not she or he has passed the defense. The committee chair or one of the co-chairs leads the discussion and communicates the result to the candidate
Dissertation Defense Announcements | The Graduate School | UNC Charlotte
Stress wave propagation in granular materials subjected to dynamic loadings has attracted much attention for exploring new physical phenomena. One-dimensional 1D granular systems, a type of artificially designed granular materials consisting of periodically aligned discrete particles, are demonstrated to phd thesis defense announcement unprecedented wave properties that are notably different from conventional engineering phd thesis defense announcement. By designing the critical characteristics of 1D granular systems, a remarkable tunability can be achieved, which yields various engineering applications.
Therefore, it is of great significance to fundamentally investigate the stress wave propagation and tunability in 1D granular systems. Firstly, the solitary wave propagation within 1D granular crystals based on composite cylinders is systematically investigated via experiments, numerical simulations, and theoretical analysis. Next, we investigate the properties of Nesterenko solitary wave supported by one-dimensional granular chains and achieve an equivalent wave transmission among various materials and dimensions.
Furthermore, we develop efficient and controllable stress wave attenuation approaches by considering I. Strain-softening behaviors; II. Kirigami-based structures, phd thesis defense announcement. Finally, we design a 1D cylindrical granular system and comprehensively investigate solitary wave tuning strategies based on phd thesis defense announcement system through mass, modulus, and thickness mismatch. Results unlock the unique solitary wave tuning mechanism and provide design guidance for next-generation signal measurement and monitoring systems, phd thesis defense announcement.
Calls for diversity in curriculum and pedagogical practices currently involve increasing demands for linguistic inclusion that reflects the diversity of student populations CCCC, phd thesis defense announcement, A single focus group interview with all three participants was conducted as well.
All interviews took place during the summer of Data was analyzed using a qualitative, narrative-based approach that included emphasis on both small stories De Fina and Georgakopoulou, and dominant narratives Lyotard, This research suggests the experiences of Black women in college composition and communications include themes like feelings of rejection, inadequacies, pressure to conform, and a lack of linguistic agency.
Per- and polyfluoroalkyl substances PFAS are fluorinated organic compounds with broad applications in aqueous film-forming foams AFFF for firefighting, lubricants, waterproof and stain-resistant products.
Perfluorooctanoic acid PFOAa legacy PFAS, is toxic and carcinogenic. Currently, phd thesis defense announcement, PFOA is replaced by the ammonium salt of a perfluoroalkyl ether carboxylic acid known as GenX.
Nevertheless, PFOA is expected to be present in the environment for an extended period after its phasing out due to its recalcitrant nature. In addition, GenX is predicted to have similar toxicity as PFOA.
Various PFAS, phd thesis defense announcement, including PFOA and GenX, have been widely detected in surface water and groundwater in the United States and worldwide. The current treatment practice for PFAS fails to provide a permanent solution and is likely to increase the risk of recontamination of surface water and groundwater.
Among various destructive methods, phd thesis defense announcement, electrochemical mineralization, which uses electric power to transform PFAS into bicarbonate and fluoride, is a promising option. However, past studies on electrochemical mineralization of PFAS have limitations such as low PFAS phd thesis defense announcement and incomplete fluorine mass balance, phd thesis defense announcement.
Hence, this study proposes a sequential treatment with ion exchange to capture and concentrate PFAS in surface water and groundwater into a low volume of brine, followed by electrochemical treatment of the PFAS-containing brine.
This study will focus on the electrochemical oxidation part of the treatment train and examine the treatment performance using PFOA, GenX, and AFFF waste streams as examples.
With the worldwide prevalence of obesity doubling over the past 30 years across a wide range of demographic and socioeconomic groups, the obesity epidemic is a major public health challenge today. Excessive food consumption and lack of exercise are two major contributors to obesity. In recent years, these two activities have been integrated into our daily lives together with social media. A growing body of literature delineated how social networks impact people's health-related behaviors and suggested social media has a role in affect people's obesity-related behaviors.
This study aims to gain an insightful understanding of which online social factors are impacting users' obesogenic behaviors and explore computational methods to examine those behaviors using social media data. Our work consists of three overall research aims. In the first aim, a systematic review was conducted to examine online social factors concerning obesity. A total of 1, studies that related to obesity and social media were collected from the three most popular electronic databases for the field.
After close inspection, 50 studies were further examined and ten types of online social factors were identified within four-level social-ecological model, which was used to explain each factors' potential impact on an individual from varying levels of online social structure to user's connection to the real world.
In the second aim, we learned how the local food environment influences state level obesity rate using social media data. Publicly available Yelp and MyFitnessPal data were collected via a novel approach to characterize the local food environment.
A statistically significant correlation between the state's food environment and state obesity rate was observed. We further built a computational model to predict the state-level obesity rate using aforementioned data, in which we achieved a Pearson correlation of 0, phd thesis defense announcement. In the third aim, we studied how a major social disrupting event, phd thesis defense announcement, COVID shutdown, affects users' dietary behavior using social media data.
Tweets relating to people's dietary behavior with images from April to June of, and were collected. An observational study of behavior patterns was conducted by using image classification models, visualization tools, and text analysis methods.
People are found eating more healthier food during complete and partial shutdowns than before Covid Results of this dissertation could help the public health agencies, policymakers, organizations and health researchers to better utilize social media to carry out obesity-related education, obesity surveillance, and develop public health policy to address this challenge.
Optimally phd thesis defense announcement a vehicle's speed profile through highway, urban, and suburban environments can result in pronounced fuel savings, particularly with heavy-duty vehicles. However, existing strategies for speed profile optimization traditionally rely on aspirational and often deterministic assumptions, which cease to be accurate in the presence of real-world features such as non-deterministic traffic and actuated signalized intersections.
The research in this dissertation establishes a hierarchical Green-Light Approach Speed h-GLAS strategy for controlling vehicles traveling through non-deterministic highway, urban, and suburban environments. The h-GLAS strategy utilizes vehicle-to-infrastructure V2I communication to receive information about the route's topology, speed limits, and signal phase and timing SPaT, phd thesis defense announcement. For suburban environments that employ semi- and fully-actuated signalized intersections, past signal timing information is used forecast the future phd thesis defense announcement of the signal phase lengths.
This information is used to construct a desired velocity profile to be tracked by a semi-economic model predictive controller MPCwhich computes the optimal wheel force command for the vehicle. When traveling through highway environments, the desired velocity profile represents a globally optimal dynamic program solution, computed offline before the beginning of a trip.
For urban and suburban environments, phd thesis defense announcement, however, the velocity profile is constructed to allow the vehicle to arrive at upcoming intersections when the probability of a green signal is maximized. The semi-economic MPC minimizes a quadratic objective function, which reflects a trade-off between minimizing mechanical energy expenditure and braking effort, with tracking the supplied desired velocity profile. This MPC is phd thesis defense announcement to maintain vehicle following constraints without changing its convex nature, so a command governor CG is located downstream to maintain vehicle-following constraints efficiently.
The CG modifies the MPC's control action by the minimal amount necessary to maintain safe vehicle following. Using the simulation packages from PTV VISSIM, the h-GLAS is validated against real signal timing algorithms within a stochastic traffic environment parameterized by real-world data. Light is an essential element of building design that influences human health, comfort, performance, and well-being.
Nowadays, as we spend a large proportion of our time in the phd thesis defense announcement environment, we are exposed to less light during daytime hours and more light during nighttime hours than what we would have naturally received across day and night. Thus, phd thesis defense announcement, inappropriate and insufficient personal light exposure during the day and night can negatively affect this standard rhythm and is associated with a range of psychological, physical, and mental health issues.
While most lighting design recommendations and standards phd thesis defense announcement been limited to addressing the energy and visual aspects of light, this trend has been criticized, and current standards acknowledge the link between light and human health.
Moreover, lack of low-cost and reliable tool to track and monitor the characteristics of light exposure as a stimulus that affects the human circadian system is evident. Phd thesis defense announcement dissertation proposed a novel user-centric lighting assist tool consisting of a low-cost and phd thesis defense announcement spectrometer to measure light spectrum and an interactive dashboard to phd thesis defense announcement the collected data in meaningful and easy to understand quantities.
Three studies covering the proposed tool are presented to 1 develop a low-cost and wearable spectrometer using Artificial Neural Networks ANNs ; 2 examine practical applicability of wearable spectrometer in the real-world environment ; and 3 develop and test the usability of an interactive dashboard for continuous tracking of personal lighting conditions. The first study examines the performance, phd thesis defense announcement, accuracy, and fabrication challenges of developing a low-cost, wearable and wireless spectrometer to measure Spectral Power Distributions SPD of light sources using ANNs.
Neural network was identified as an effective method for improving the accuracy of the developed spectrometer. Additionally, the developed spectrometer offers real-time communication that enables it to be integrated into IoT-based intelligent lighting systems for tailoring indoor lighting systems according to individual circadian needs.
The second study examines the practical applicability of developed spectrometer to continuously record personal lighting conditions of office workers in real-world environment. The study provides insights for enhancing occupants health and well-being within the built environment.
The third study examines the potential of a web-based app to enable healthier living with light. By engaging the end-user directly throughout the entire process of design and development of the interactive dashboard, the study identified the interactive dashboard as a useful and usable tool for end-users.
This dissertation is one of the first attempts to develop a low-cost and wearable spectrometer together with an interactive application to provide vital information regarding the non-visual effects of light on health by real-time tracking of personal lighting conditions. The findings of this dissertation demonstrates the importance of an affordable and accessible human-centric lighting assist tool as a powerful driver of promoting healthy behavior change in buildings, outlining new directions in the design of buildings that are not only comfortable and energy efficient, but also healthier for their occupants.
Opioid overdose deaths have increased substantially over the past fifteen years. I characterized the experience of the medical community and measured the multi-level factors influencing opioid prescribing within the context of legislation and clinical decision support interventions.
My content analysis of letters to the editor in JAMA demonstrated that physicians seek to balance pain management and the adverse effects of opioids. Physicians took ownership of their role in the epidemic but called upon the government and community to help address the issue.
Collectively, this research presents a sophisticated and nuanced understanding of the multi-level factors which influence guideline-concordant opioid prescribing. These data can inform tailored interventions and guide decision-making and policy.
About 1. PrEP, a pill taken daily by mouth, contains antiretroviral drugs and is highly effective in preventing the acquisition of HIV.
Existing metrics to measure PrEP overestimates PrEP coverage, phd thesis defense announcement. Moreover, previous studies conducted at the national and state levels phd thesis defense announcement fail to capture disparities in PrEP use within the county and cannot be used by county public health officials to conduct targeted interventions.
This dissertation establishes an evaluation framework for HIV prevention by measuring PrEP usage at subcounty levels. The PrEP coverage increased annually throughout the study period in the county. The G2ZMC PHI had a significant gradual effect of about nine PrEP patients every month. The results of this dissertation quantified and identified opportunities for improvement in PrEP use in underserved groups. This work can be extended to other counties and provide a foundation for similar studies on other emerging infectious diseases.
Supramolecular aggregates can have specific nanostructures that give them a variety of functionalities, making them useful for many applications in energy, catalysis, medicine, phd thesis defense announcement, biotechnology and other scientific fields. These functional nanostructures are built via the self-assembly of building blocks with particular physicochemical properties. Different molecular interactions participate in the self-assembly processes such as metallic, phd thesis defense announcement, ionic, van der Waals forces, electrostatic, hydrophobic, phd thesis defense announcement, H-bonding, and π- π stacking.
Therefore, the building blocks for self-assembly are molecules that are pre-designed to supply these interactions in a given environment; in addition, phd thesis defense announcement, they can provide a desired functionality. Polyhedral oligomeric silsesquioxane POSS is a promising scaffold to be used as delivery system. When covalently linked to a photosensitizer, POSS has an influence on the self-assembly behavior of the photosensitizer, modifying its properties, potentially enhancing its efficacy toward photodynamic therapy PDT.
In this Thesis, I describe my work on the study of polyhedral oligomeric silsesquioxanes POSS porphyrin derivatives as building blocks, their self-assembly and application in photodynamic therapy PDT. We envision that the chemical tunability of POSSs can be used as a promising option to improve the delivery and performance of photosensitizers.
The schooling and leadership experiences of Black girls and women are overlooked as they are often intertwined with the experiences of Black males or White women. Phd thesis defense announcement, the academic, mentoring, leadership, and mental health needs of Black girls and women have been neglected and challenged in educational settings.
The purpose of this qualitative study was to explore the racialized lived experiences of Black girls and women in K schools from a student and Black school administrator perspective.
Zhicheng Ji PhD thesis defense
, time: 57:31Defense Announcements - Graduate School - Oakland University
Mar 25, · Dissertation Title: "Application of signal decomposition to improve time delay estimates for synthetic aperture sonar motion compensation" Ishwarya Srikanth June 23, - Department of Civil, Environmental and Geomatics Engineering 12 rows · Sep 08, · Upcoming Doctoral Dissertation Defense Announcements. Abstracts are available in the PDF linked to Sep 29, · 10/4/ | Samantha Holt, PhD, Biomedical Engineering. am, ETB, Room , College Station. Tentative Title of Thesis / Dissertation / Record of Study: The Use of Tetrazine-Norbornene Click Products in Dynamic Supramolecular Crosslinking and the Design of
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